Who is elmoTHUMM? elmoTHUMM is a group of contemporary a cappella musicians based in Michigan. Now a quintet, including Greg Vaden, Jason Miller, Adam Westmoreland, Ed Pendleton & new-comer Paul Ellinger, elmoTHUMM is ready to take its show on the road in 2001. Perfect for school events, corporate functions, fairs, festivals, & anywhere there is a need for great a cappella entertainment, elmoTHUMM is sure to please. This will be elmoTHUMM‚s fourth appearance at the Chicago Harmony Sweepstakes and as always look forward to having a great time.